AS3525-A/-B C22O22
Data Sheet, Confidential
5.2 Hard-Disk-Player
The following schematic shows a typical hard-disk-player application of the AS3525-A using the CTBGA224 package. A single Li+ battery powers
the complete system. The Li+ cell can be charged either from a DC-supply or the USB connector. Linear regulators, which are connected to this
battery voltage (BVDD), provide the supply voltages for the analog functions, the USB-2.0-Phy, the digital periphery and the SDRAM interface. A
highly efficient Charge-Pump Step-Down-Converter supplies the digital core. All chip functions are available in this package variant. For lowest
power consumption, it is recommended to use low voltage external SDRAMs (PVDD=1.8V).
Figure 3 Hard Disk Player
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